In a closed system, if the internal energy increases, what must happen to the he

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Question: In a closed system, if the internal energy increases, what must happen to the heat and work?

Options:

Correct Answer: Heat must be added or work must be done on the system

Solution:

In a closed system, if the internal energy increases, it means that heat must be added or work must be done on the system.

In a closed system, if the internal energy increases, what must happen to the heat and work?

In a closed system, if the internal energy increases, what must happen to the heat and work?

Step 1: Understand that a closed system means no matter can enter or leave the system.
Step 2: Know that internal energy is the total energy contained within the system.
Step 3: Recognize that an increase in internal energy means the system is gaining energy.
Step 4: Identify the two ways energy can be added to a system: by adding heat or by doing work on the system.
Step 5: Conclude that if the internal energy increases, either heat must be added to the system or work must be done on the system.

First Law of Thermodynamics – The principle that states the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
Closed System – A physical system that does not exchange matter with its surroundings but can exchange energy.
Internal Energy – The total energy contained within a system, including kinetic and potential energy at the molecular level.